patch: Add new an_ES.ISO-8859-1 to list of SUPPORTED locales

[Petter Reinholdtsen]

[Ulrich Drepper]
> This makes no sense.  Why should we add a new locale which use an
> unsuitable encoding?  Spain needs the Euro sign.  There never has been a
> an_ES locale so this can either use the correct encoding from the
> beginning or there can be a @euro locale.

Right.  I was just assuming the 'Charset: ISO-8859-1' comment at the
top of the locale was correct.  Lets ask the author if the comment
should be changed to ISO-8859-15 instead.  I copy this mail to him.